Stirrer having Programmable Stirring Mode Control

Abstract

A stirrer having programmable stirring mode control comprises a stirrer main body, an input interface, a controller and a frequency changer. The stirrer main body drives a stirring axle to rotate through a driving mechanism. The controller controls the frequency changer through a vector control circuit so as to control changeable frequency three-phase alternating current voltages or current of a three-phase induction motor. The controller executes stirring steps of multiple set of material items at an automatic mode. Predetermined parameters of the stirring step can be stored after updating, thereby forming the stirrer.

1 . A stirrer having programmable stirring mode control comprising:
 a stirrer main body having
 a bottom seat, 
 a stand column vertically disposed on the bottom seat, the stand column having a top, 
 a head portion disposed horizontally on the top of the stand column, the head portion having a stirring axle downwardly stretched toward a stirring bucket, 
 two support arms outwardly stretched from the stand column to combine with the stirring bucket, 
 a driving mechanism, disposed in the head portion to drive the stirring axle to rotate and to simultaneously drive the stirring axle eccentrically circling a center of the stirring bucket, comprising a three-phase induction motor; 
   an input interface comprising a plurality of input components and at least one display component;   a controller for executing an execution program, in an automatic mode that comprises stirring steps of multiple sets of material items, each stirring step being defined according to a set of predetermined parameters, the predetermined parameters comprising stirring speeds and stirring times for each stirring step and each material item, the predetermined parameters being stored by the controller and displayed by the display component, the predetermined parameters can be updated with input received from an input component; and   a frequency changer, connected to and controlled by the controller, comprising a vector control circuit for controlling an induction motor,   wherein the controller executes the execution program in the automatic mode, the induction motor automatically changes stirring speeds periodically according to the material item selected.   
     
     
         2 . The stirrer having programmable stirring mode control as recited in  claim 1 , wherein the plurality of input components of the input interface comprises a setting portion, a start key, a stop key and a pause key, and the setting portion being a flying shuttle knob having a pressing confirmation function. 
     
     
         3 . The stirrer having programmable stirring mode control as recited in  claim 2 , wherein the execution program further comprises a manual mode, and the plurality of input components further comprise a mode key and a vibration key, and the execution program is switched between the automatic mode and the manual mode through the mode key, and while in the manual mode, the induction motor vibrates and operates when the vibration key is pressed, and the induction motor remains operational by pressing the start key, and the induction motor is stopped by pressing the pause key or the stop key, and when the induction motor starts or is at a stop state, the setting portion is rotated to directly change a speed of the three-phase induction motor. 
     
     
         4 . The stirrer having programmable stirring mode control as recited in  claim 2 , wherein the setting portion is pressed to enter options for the material items, and the options are selected by rotating the setting portion, and a selected option is confirmed by pressing the setting portion. 
     
     
         5 . The stirrer having programmable stirring mode control as recited in  claim 2 , wherein the setting portion is pressed for two seconds to enter a content setting of the stirring steps, and a predetermined parameter is selected by rotating the setting portion, and the setting portion is further pressed to enter options of the predetermined parameter, and numerical value of the predetermined parameter is regulated by rotating the setting portion, and the numerical value of the predetermined parameter is confirmed by pressing the setting portion, and the setting is finished by pressing the stop key. 
     
     
         6 . The stirrer having programmable stirring mode control as recited in  claim 5 , wherein the predetermined parameter is a setting time, and when the setting time is set as zero, the execution program determines that the stirring step is finished. 
     
     
         7 . The stirrer having programmable stirring mode control as recited in  claim 2 , wherein a setting of a formula content of a material item is further provided at the automatic mode, and the formula content is regulated by rotating the setting portion, and a selected option is confirmed by pressing the setting portion, and the setting is finished by pressing the stop key. 
     
     
         8 . The stirrer having programmable stirring mode control as recited in  claim 1 , wherein the execution program provides a set of options having a plurality of stirring speeds, and the set of options is commonly selected by multiple sets of the material items, and the stirring speed of each option is set and changed by the plurality of input components, and each stirring step in each material item randomly selects one option as the stirring speed. 
     
     
         9 . The stirrer having programmable stirring mode control as recited in  claim 1 , wherein the execution program provides a set of options having a plurality of stirring speeds to each material item respectively, and each set of options is independently selected with respect to the material item, and the stirring speed of each option is set and changed by the plurality of input components, and each stirring step in each material item randomly selects one option as the stirring speed. 
     
     
         10 . The stirrer having programmable stirring mode control as recited in  claim 8  or  9 , wherein the stirring speed is represented by a code.